1)   AcadCalcStair 02 AcadCalcStair - Stair and Rail Auto drafting program + Calculator for AutoCAD. Main features: STAIRS & RAILS. Parametrical Modeling and Auto Drafting. On the base of parameters the program creates the drawing: Stair Plan and Elevation. 2)   Curvilinear 1 Curvilinear: Easy Learning Plane Analytic Geometry An Intuitively-Easy-To-Use visual interactive software, oriented to overcome the abstraction that exists in the Plane Analytic Geometry (PAG), this is a tool that makes it easy to master PAG. 3)   Panageos 1 Panageos is oriented to the intensive solution of problems on Plane Analytic Geometry. The main feature of Panagoes is its power to read the user's equations and interpret them, for this reason the data input is exclusively through the keyboard. 4)   GolfCalc for Windows 2.8 GolfCalc for Windows uses the index-based golf handicapping standards to calculate course handicaps and track scores for up to 300 golfers on up to 200 courses. Easy-to-use, Windows interface for adding, editing scores and courses.